134 lines
4.4 KiB
Python
134 lines
4.4 KiB
Python
##############################################################################
|
|
#
|
|
# Copyright (c) 2004 TINY SPRL. (http://tiny.be) All Rights Reserved.
|
|
#
|
|
# $Id: pooler.py 1310 2005-09-08 20:40:15Z pinky $
|
|
#
|
|
# WARNING: This program as such is intended to be used by professional
|
|
# programmers who take the whole responsability of assessing all potential
|
|
# consequences resulting from its eventual inadequacies and bugs
|
|
# End users who are looking for a ready-to-use solution with commercial
|
|
# garantees and support are strongly adviced to contract a Free Software
|
|
# Service Company
|
|
#
|
|
# This program is Free Software; you can redistribute it and/or
|
|
# modify it under the terms of the GNU General Public License
|
|
# as published by the Free Software Foundation; either version 2
|
|
# of the License, or (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program; if not, write to the Free Software
|
|
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
#
|
|
##############################################################################
|
|
|
|
import psycopg
|
|
import tools
|
|
import sys,os
|
|
|
|
#try:
|
|
# import decimal
|
|
#except ImportError:
|
|
# from tools import decimal
|
|
|
|
|
|
import re
|
|
|
|
class fake_cursor:
|
|
nbr = 0
|
|
_tables = {}
|
|
def __init__(self, db, con, dbname):
|
|
self.db = db
|
|
self.obj = db.cursor()
|
|
self.con = con
|
|
self.dbname = dbname
|
|
|
|
def execute_dont_run(self,*args):
|
|
if not fake_cursor.nbr % 100:
|
|
print 'sql: ',fake_cursor.nbr
|
|
res = re.match('^select.* from ([a-zA-Z_]+) .*$', args[0], re.I)
|
|
if res:
|
|
fake_cursor._tables.setdefault(res.group(1), 0)
|
|
fake_cursor._tables[res.group(1)] += 1
|
|
|
|
#else:
|
|
# if len(args)>1:
|
|
# print 'sql: ',fake_cursor.nbr, args[0], args[1]
|
|
# else:
|
|
# print 'sql: ',fake_cursor.nbr, args[0]
|
|
|
|
if not fake_cursor.nbr % 5000:
|
|
ct = []
|
|
for t,c in fake_cursor._tables.items():
|
|
ct.append([c,t])
|
|
ct.sort()
|
|
ct.reverse()
|
|
print 'After %d queries' % (fake_cursor.nbr,)
|
|
for line in ct[:50]:
|
|
print ' %s: %d' % (line[1], line[0])
|
|
|
|
#if len(args)>1:
|
|
# print 'sql: ',fake_cursor.nbr, args[0], args[1]
|
|
#else:
|
|
# print 'sql: ',fake_cursor.nbr, args[0]
|
|
|
|
fake_cursor.nbr += 1
|
|
return self.obj.execute(*args)
|
|
|
|
def close(self):
|
|
# print "close cursors fno:", [i.fileno() for i in self.db.cursors]
|
|
self.obj.close()
|
|
|
|
# This force the cursor to be freed, and thus, available again. It is
|
|
# important because otherwise we can overload the server very easily
|
|
# because of a cursor shortage (because cursors are not garbage
|
|
# collected as fast as they should). The problem is probably due in
|
|
# part because browse records keep a reference to the cursor.
|
|
del self.obj
|
|
# print "after close cursors fno:", [i.fileno() for i in self.db.cursors]
|
|
|
|
def __getattr__(self, name):
|
|
# print 'LOOK',name
|
|
return getattr(self.obj, name)
|
|
|
|
class fakedb:
|
|
def __init__(self, truedb, dbname):
|
|
self.truedb = truedb
|
|
self.dbname = dbname
|
|
|
|
def cursor(self):
|
|
return fake_cursor(self.truedb, {}, self.dbname)
|
|
|
|
def decimalize(symb):
|
|
if symb is None: return None
|
|
if isinstance(symb, float):
|
|
return decimal.Decimal('%f' % symb)
|
|
return decimal.Decimal(symb)
|
|
|
|
def db_connect(db_name):
|
|
host = tools.config['db_host'] and "host=%s" % tools.config['db_host'] or ''
|
|
port = tools.config['db_port'] and "port=%s" % tools.config['db_port'] or ''
|
|
name = "dbname=%s" % db_name
|
|
user = tools.config['db_user'] and "user=%s" % tools.config['db_user'] or ''
|
|
password = tools.config['db_password'] and "password=%s" % tools.config['db_password'] or ''
|
|
tdb = psycopg.connect('%s %s %s %s %s' % (host, port, name, user, password), serialize=0)
|
|
fdb = fakedb(tdb, db_name)
|
|
return fdb
|
|
|
|
def init():
|
|
#define DATEOID 1082, define TIMESTAMPOID 1114 see pgtypes.h
|
|
psycopg.register_type(psycopg.new_type((1082,), "date", lambda x:x))
|
|
psycopg.register_type(psycopg.new_type((1083,), "time", lambda x:x))
|
|
psycopg.register_type(psycopg.new_type((1114,), "datetime", lambda x:x))
|
|
#psycopg.register_type(psycopg.new_type((700, 701, 1700), 'decimal', decimalize))
|
|
|
|
psycopg.register_type(psycopg.new_type((1082,), "date", lambda x:x))
|
|
psycopg.register_type(psycopg.new_type((1083,), "time", lambda x:x))
|
|
psycopg.register_type(psycopg.new_type((1114,), "datetime", lambda x:x))
|
|
|